Trace Explorer

Trace Explorer aggregates traceroutes to many popular websites and makes them searchable, allowing you to discover which web sites are hosted near each other, at a particular ISP, or behind a specific router.

To get started, type in the domain name of a web site or ISP:

Tips

By default, you'll only see hosts or routers that exactly match your query and anything beyond them. If you want to see what else is near by, try clicking on the IP address of the router just before your destination.
To compare the paths to multiple destinations, just type in both, as in [perl.org cpan.org].
To remove something from the results, prefix it with a minus, as in [perl.org -dreamhost.com], which will find *.perl.org sites that are not on Dreamhost.
For a quick trace of any page you are viewing, bookmark this link -> Trace Explorer <- by right-clicking on the link and selecting "Add bookmark for link" or dragging it to your browser toolbar.
Only around 1000 results will be returned. If your query is very broad, you may get no results or will see what exactly matches your query but not very far beyond that. If you run into this, try to be more specific.
This tool has already collected traces to many popular web sites within the last two weeks. In addition to searching through recently-collected data, if you type in a hostname it doesn't know about, it will collect the data while you wait and add that to its results.

Example Queries

[google.com] - Hosts or routers named "google.com" and what's behind them.
[pnap.net rtt:8] - What's on Internap's network within 8ms of Cyberverse?
[66.35.194.43] - What's behind the same router as Slashdot?
[dsl.speakeasy.net] - Who hosts their web sites on Speakeasy DSL?
[okld.twtelecom.net -peer*.twtelecom.net] - What's on Time Warner's network in Oakland, but not through peering?

Caveats

The Internet is so big that this tool can never be complete or up to date, and it can only show you Cyberverse's view of the Internet. It also makes a bunch of simplifying assumptions about how routing and DNS work, and may occasionally show inaccurate or impossible paths. But you might still find it interesting.